package cn.wolfcode.qo;

import lombok.Getter;
import lombok.Setter;
import lombok.ToString;

import java.util.List;
@Setter
@Getter
@ToString
public class PageResult<T> {
    private int currentPage; //第几页
    private int pageSize; //每页多少条
    private int totalCount; //一共多少条
    private List<T> data; //当前页的数据

    private int prevPage;//上一页
    private int totalPage; //总页数
    private int nextPage; //下一页

    public PageResult(int currentPage, int pageSize, int totalCount, List<T> data) {
        this.currentPage = currentPage;
        this.pageSize = pageSize;
        this.totalCount = totalCount;
        this.data = data;

        if (this.totalCount <= this.pageSize){
            this.totalPage = 1;
            this.nextPage = 1;
            this.prevPage = 1;
            return;
        }

        this.totalPage = this.totalCount % this.pageSize == 0 ?
                this.totalCount / this.pageSize : this.totalCount / this.pageSize + 1;
        this.prevPage = this.currentPage - 1 >= 1 ? this.currentPage - 1 : 1;
        this.nextPage = this.currentPage + 1 <= this.totalPage ?
                this.currentPage + 1 : this.totalPage;
    }
}
